August 1949

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Features

The Personality of Peoples

With the aid of depth psychology, anthropologists are learning much about how a nation's cultural patterns may shape the character of its citizens

By Ralph Linton

Potassium

The 19th element of the periodic table has fascinating physical and biological eccentricities. Its behavior in cells is one of the fundamental characteristics of life

By Wallace O. Fenn

Hittite Citadel

Passageway on a hill in Turkey is the key to undeciphered script of a dead civilization

The Antibiotics

The competition of microorganisms has provided man with powerful agents against infection. Presenting a review of their discovery and their development

By George W. Gray

Learning to Think

Some psychologists have believed that human beings are born with certain powers of reason. The authors present the view that all such functions must first be learned

By Harry F. and Margaret Kuenne Harlow

Galileo

The massive achievements of the Italian physicist, astronomer and mathematician mark the transition from the Middle Ages to the era of modern science

By I. Bernard Cohen

Radioactivity and Time

The regular decay of radioactive isotopes provides evidence of the age of Egyptian tombs, Pleistocene sediments, pre-Cambrian rocks and the earth itself

By P. M. Hurley

Seeing Light and Color

One of our most familiar sensory experiences is perhaps the most difficult to define. The study of it requires the application of physics, physiology and psychology

By Ralph M. Evans

Departments

50 and 100 Years Ago: August 1949

Science and the Citizen: August 1949

Letters

Letters to the Editors, August 1949

Recommended

Books

Amateur Scientist

The Amateur Astronomer

Departments

Bibliography

Purchase To Read More

Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

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